1 import java.awt.*;
2 import java.awt.event.ActionEvent;
3 import java.awt.event.ActionListener;
4 import java.awt.event.MouseAdapter;
5 import java.awt.event.MouseEvent;
6
7 import javax.swing.*;
8 import javax.swing.border.LineBorder;
9
10 public class Test_18_6 extends JApplet{
11 static char whoseTurn = 'X';
12 private static Cell[][] cells = new Cell[3][3];
13 static JLabel jlblStatus = new JLabel("X's turn to play");
14 JButton newGame = new JButton("NEW GAME");
15
16 public Test_18_6(){
17 JPanel p = new JPanel(new GridLayout(3,3,0,0));
18 for(int i = 0; i < 3; i++)
19 for(int j = 0; j < 3; j++)
20 p.add(cells[i][j] = new Cell());
21
22 p.setBorder(new LineBorder(Color.red,1));
23 jlblStatus.setBorder(new LineBorder(Color.yellow,1));
24
25 add(newGame,BorderLayout.NORTH);
26 add(p,BorderLayout.CENTER);
27 add(jlblStatus,BorderLayout.SOUTH);
28 newGame.addActionListener(new ActionListener(){
29
30 @Override
31 public void actionPerformed(ActionEvent arg0) {
32 // TODO Auto-generated method stub
33 for(int i = 0; i < 3; i++)
34 for(int j = 0; j < 3; j++)
35 cells[i][j].setToken(' ');
36 whoseTurn = 'X';
37 jlblStatus = new JLabel("X's turn to play");
38 }
39
40 });
41 }
42
43 public static boolean isFull(){
44 for(int i = 0; i < 3; i++)
45 for(int j = 0; j < 3; j++)
46 if(cells[i][j].getToken() == ' ')
47 return false;
48
49 return true;
50 }
51
52 public static boolean isWon(char token){
53 for(int i = 0; i < 3; i++)
54 if((cells[i][0].getToken() == token) && (cells[i][1].getToken() == token) && (cells[i][2].getToken() == token)){
55 return true;
56 }
57
58 for(int j = 0; j < 3; j++)
59 if((cells[0][j].getToken() == token) && (cells[1][j].getToken() == token) && (cells[2][j].getToken() == token)){
60 return true;
61 }
62
63 if((cells[0][0].getToken() == token) && (cells[1][1].getToken() == token) && (cells[2][2].getToken() == token)){
64 return true;
65 }
66
67 if((cells[0][2].getToken() == token) && (cells[1][1].getToken() == token) && (cells[2][0].getToken() == token)){
68 return true;
69 }
70 return false;
71 }
72 }
73
74 class Cell extends JPanel{
75 private char token = ' ';
76
77 public Cell(){
78 setBorder(new LineBorder(Color.black,1));
79 addMouseListener(new MyMouseListener());
80 }
81
82 public char getToken(){
83 return token;
84 }
85
86 public void setToken(char c){
87 token = c;
88 repaint();
89 }
90
91 protected void paintComponent(Graphics g){
92 super.paintComponent(g);
93
94 if(token == 'X'){
95 g.drawLine(10, 10, getWidth() - 10, getHeight() - 10);
96 g.drawLine(getWidth() - 10, 10, 10, getHeight() - 10);
97 }
98 else if(token == 'O'){
99 g.drawOval(10, 10, getWidth() - 20, getHeight() - 20);
100 }
101 }
102 private class MyMouseListener extends MouseAdapter{
103 public void mouseClicked(MouseEvent e){
104 if(token == ' ' && Test_18_6.whoseTurn != ' '){
105 setToken(Test_18_6.whoseTurn);
106
107 if(Test_18_6.isWon(Test_18_6.whoseTurn)){
108 Test_18_6.jlblStatus.setText(Test_18_6.whoseTurn + "won! the game is over");
109 Test_18_6.whoseTurn = ' ';
110 }
111 else if(Test_18_6.isFull()){
112 Test_18_6.jlblStatus.setText("Draw! The game is over");
113 Test_18_6.whoseTurn = ' ';
114 }
115 else {
116 Test_18_6.whoseTurn = (Test_18_6.whoseTurn == 'X')?'O':'X';
117 Test_18_6.jlblStatus.setText(Test_18_6.whoseTurn + "'s turn");
118 }
119 }
120 }
121 }
122 }
